115545507180020 has 48 divisors (see below), whose sum is σ = 252496764717120. Its totient is φ = 44378219214336.

The previous prime is 115545507180013. The next prime is 115545507180029. The reversal of 115545507180020 is 20081705545511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115545507180029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1138552997 + ... + 1138654476.

It is an arithmetic number, because the mean of its divisors is an integer number (5260349264940).

Almost surely, 2^{115545507180020} is an apocalyptic number.

115545507180020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115545507180020 is an abundant number, since it is smaller than the sum of its proper divisors (136951257537100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115545507180020 is a wasteful number, since it uses less digits than its factorization.

115545507180020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277207584 (or 2277207582 counting only the distinct ones).

The product of its (nonzero) digits is 280000, while the sum is 44.

The spelling of 115545507180020 in words is "one hundred fifteen trillion, five hundred forty-five billion, five hundred seven million, one hundred eighty thousand, twenty".